Name |
alpha()颜色的透明度值 |
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Examples |
noStroke(); color c = color(0, 126, 255, 102); fill(c); rect(15, 15, 35, 70); float value = alpha(c); // Sets ‘value’ to 102 fill(value); rect(50, 15, 35, 70); |
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Description |
Extracts the alpha value from a color. 从颜色中提取 alpha 值。 |
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Syntax |
alpha(rgb) |
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Parameters |
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Returns |
float |
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Related |
red() |
- 本文固定链接: http://iprocessing.cn/2017/08/08/alpha颜色的透明度值/
- 转载请注明: 卡萨布兰卡 于 Processing编程艺术 发表